Seedream 4.5

Pricing — 1 offering(s)

Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.

Capability profile

Operator guidance

Route here in preference to Seedream 4.0 for the same use cases — 4.5 is the current-generation model in this family (4.0 is now `generation: previous`). Compare against Gemini 3.1 Flash Image or Gemini 3 Pro Image (also strong on text rendering) — no independently verified head-to-head exists between any of these in this registry.

Use cases

• In-image text, formula, and dense-text rendering, improved over 4.0
• Multi-reference-image editing where consistency of reference-image details matters
• Direct successor to 4.0 for the same unified generation+editing workflow

Limitations

• Resolution ceiling, inference speed, photorealism, and artistic range are unrated — no vendor-primary claim found distinct from generic marketing or unattributed secondary press
• ByteDance's own MagicBench comparison claims are vendor-run, not one of this registry's tracked independent benchmarks (GenEval/T2I-CompBench/etc.), so deliberately not recorded in a structured benchmarks field — same treatment 4.0's entry gives its own MagicBench claims
• No independently published GenEval / T2I-CompBench score found. An independent Elo does now exist: Artificial Analysis Text to Image Arena (artificialanalysis.ai/image/leaderboard/text-to-image, confirmed 2026-08-19, SCO-462 sweep) ranks Seedream 4.5 #31 of ~147 models tracked, Elo 1204 — lower than the predecessor Seedream 4.0's own Elo 1223 on the same arena (see seedream-4-0.yaml), a counterintuitive result worth flagging rather than smoothing over; ByteDance's own MagicBench claims a prompt-adherence improvement over 4.0, but that's a different benchmark and doesn't contradict this arena result. A different benchmark type than GenEval/T2I-CompBench, not a substitute for one

Citations

• Seedream 4.5 — Artificial Analysis Text to Image Arena (independent Elo)
• Seedream 4.5 (ByteDance Seed's own model page)
• Pricing — ModelArk (BytePlus's own docs; seedream-4-5-251128 pricing row)